guix package -i kicad will fait with #error "Unsupported CPU architecture" on my Talos II

[Tobias Alexandra Platen <guix@platen-software.de>]

When I try to install Kicad, I'll get the following output:

The following derivations will be built:
  /gnu/store/5rinv8djwjz0bdami6nr6cm3zj382fsb-libcxi-1.0.1-
0.5b6f8b5.drv
  /gnu/store/x26zsx3fw74vhfc35i79fansmlmhl0cc-libfabric-1.22.0.drv
  /gnu/store/nfj2qvhyxvfc7x5fkdlyg2z1wnpqw9cz-openmpi-4.1.6.drv
  /gnu/store/l1rbmwj9m4kgkm1qada665mm0m6g10w1-libngspice-43.drv
  /gnu/store/y88c48hzcm78ch39wjfa3dpdgw9n6m7r-webkitgtk-with-libsoup2-
2.44.1.drv
  /gnu/store/qv0zpz8h2dvhbmxz6smsbmc763rdkdxm-wxwidgets-3.2.5.drv
  /gnu/store/llydl3baxardzgf9xmdbgjikny68vaar-python-wxpython-4.2.0.drv
  /gnu/store/b0s2jgimknw6035kcqvpb6sdxkhakz7b-kicad-7.0.11.drv
  
After a few minutes the build fails with:

building /gnu/store/5rinv8djwjz0bdami6nr6cm3zj382fsb-libcxi-1.0.1-
0.5b6f8b5.drv...
\ 'build' phasebuilder for
`/gnu/store/5rinv8djwjz0bdami6nr6cm3zj382fsb-libcxi-1.0.1-
0.5b6f8b5.drv' failed with exit code 1
build of /gnu/store/5rinv8djwjz0bdami6nr6cm3zj382fsb-libcxi-1.0.1-
0.5b6f8b5.drv failed
View build log at
'/var/log/guix/drvs/5r/inv8djwjz0bdami6nr6cm3zj382fsb-libcxi-1.0.1-
0.5b6f8b5.drv.gz'.
........
CC       utils/read_lat.o
........
#error "Unsupported CPU architecture"

I also found a blogpost which mentions libcxi, what does libcxi do?
https://hpc.guix.info/blog/2024/11/targeting-the-crayhpe-slingshot-interconnect/

I guess that libcxi is optional for Kicad, so I could hack guix to
build Kicad without libcxi.